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SCZ Series Flashboard Valve

MFG: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 0086 (021) 3652 8716
Mob: (0086) 138 1635 6498

product drawing

Non-rising stem resilient seat seal gate valves
SCZ series flashboard valves

General information

Flashboard valve drive actuator can adopt electric, pneumatic, manual, bevel gear rotating devices. Pneumatic actuator can be installed by air filters, solenoid valves, sensors, if installed the aboved drive actuators, pneumatic actuator shall be indicated in the contract.

Dimensions & constructral diagram

Pneumatic flashboard valve
Pneumatic flashboard valve
Electric flashboard valve
Electric flashboard valve
Manual flashboard valve
Manual flashboard valve

The materials of main parts

Part Name Material Part Name Material
Body 1CF18Ni9Ti CF8M CF8 CF3M CF3 WCB Stem 1CF18Ni9Ti
Seat ring Rubber or PTFE Yoke Stainless Steel
Sealing gasket Between Bodies Rubber or PTFE Packing Gland Stainless Steel
Disc 1CF13Ni9Ti CF3M CF8 CF3M CF3 2CF13 packing Black lead or PTFE
Body assembly bolt B7 packing gland Bolt B7
Note:Rubber brand depends on the medium nature and the temperature used.disc material brand depends on the medium nature.

Shell test and seal test

The shell test and seal test medium is water (containing preservatives), kerosene or other suitable liquid, of which viscosity less than water,.
Sealing is a non-metallic seal flashboard valve, the sealing shell test and requirements should be written by GB/T13927-92D level.
Sealing part is metal sealed flashboard valve, if have any request about the sealing performance , the leakage of seal test should be calculated by 1 × DNmm3 / s; while if not, this test will not be taken.
The flashboard valve drived by electric, hydraulic, pneumatic actuactor, after the closing of position adjustment, it should be closed three times, then the shell and sealing test should be taken under the requirements by 1 and 3.
The cleanliness requirements of flashboard valve are according to JB/T7748 requirements.
Static life test.
The number of Flashboard Static life test is according to the requirement, and other technical requirements are according to JB/Z234 requirements.

Static Pressure Service Life Test time Metallic Seal DN≤150mm 1200 Times
DN≥200-400mm 1000 Times
DN≤450mm 800 Times
Non-Metallic Seal DN≤150mm 1400 Times
DN≥200-400mm 1200 Times
DN≤450mm 1000 Times
Note: 1. Metallic seal means sealing material is matel to matel.
       2. Non-Metallic Seal means sealing material is matel to non-matel or non-matel to non-matel.

The main external and connection dimensions(mm)

DN L ф1 H G2 n-M cylinder diameter(mm)
PN 0.6 PN 1.0
50 40   125 397 51 4-M16 50
65 40   145 418 67 4-M16 65
80 50   160 579 82 4-M16 80
100 50   180 612 102 8-M16 100
125 50   210 710 127 8-M16 125
150 60   240 816 152 8-M20 150
200 60   295 990 202 8-M20 200
250 70   350 1106 253 12-M20 250
300 70 70 400 1264 303 12-M20 300
350 80 80 460 1575 353 16-M20 350
400 80 80 515 1562 402 16-M22 400
450 90 90 565 1750 452 20-M22 450
500 90 90 620 1994 502 20-M22 500
600 100 100 725 2040 603 20-M27 600
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